Hello and Welcome to FixYa!
This is a famous issue known as WSOD (White screen of death) But don't worry its not dead, the firmware is damaged and is causing all this mess.
To proceed you should have the USB Data Cable of your Phone (
DCU-60) It comes with the phone. If you didn't have one get it borrowed by your friend or someone, all the W-series phones uses the same cable so you can get any one's.
Ok, after getting the cable the second this you need is a PC with an Internet connection, Have it? ok now easy as 123.
Navigate to
this page, its an Update utility this will install a fresh copy of the latest firmware available for your phone,
NOTE: You Phone will be as out of the box condition, Everything will be lost.
You can also download the Update Guide its also there on that page.
All you have to do is to download the application, install it and run. Everything else will be guided to you step by step, by the application.
If you are still having any problem, do ask me. I'm here to help. There are always ways to correct things, If not we will craft one. :-)
If you think I was of help, your token of appreciation in the form of rating and a testimonial will be esteemed.
Concerned, Nooh